Breast

Breasts were the mammary glands of mammalian species and some reptomammals, and were normally a distinguishing feature of the female of the species. Males did have breasts, but they were far less developed than their female counterparts due to the sexual dimorphism. In some cultures, sentient females nursed their own young. Most cultures in the Multiverse required women to cover their breasts in public, and it was considered shameful to appear in public with them exposed. The exception to this rule was Betazoid wedding ceremonies, in which all attendees were naked. Some Twi'lek, Orion, Draenei, and other dancers performed bare-breasted,[24] and Askajian females were prized as dancers and lingerie models because of their six-breasted physique

As male individuals were not biologically meant to nurse their offsprings, they sported much smaller breasts and produced no milk. Kaidan Alenko,[9] Lee Sin[10], and BJ Blazkowicz (in certain circumstances, such as on Nelvaan) would freely exhibit them.